A canker sore or apthous ulcer is caused by an immune reaction or trauma. The chancre needs treatment via antibiotics to be cured and the canker sore is self limiting and heals on its own but does recur.

A canker sore or apthous ulcer is caused by an immune reaction or trauma. The chancre needs treatment via antibiotics to be cured and the canker sore is self limiting and heals on its own but does recur.
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These are three type of sores that cause confussion,
1: canker sores, which are in the mouth 2: cold sores caused by oral herpes usually on the or around the lips,
3: chancre sores caused by syphilis usually on the genitals.

In brief:
Don't want chancres!

These are three type of sores that cause confussion,
1: canker sores, which are in the mouth 2: cold sores caused by oral herpes usually on the or around the lips,
3: chancre sores caused by syphilis usually on the genitals.
Would you like to video or text chat with me?